Improvement in clamps for carriage-seats



' H. 1. NORTHRUP.

Clamp fof Carriage Seats:

Patented `Jany 24, 1871.

fiinitell' gisten para. aan.

a J. 'Nonrnnun or LANsIneBnne, nnwqronn.

Letters Patent No. 111,140, dated January 24, v1871.

IMPROVEMENT IN CLAMPS FORVCARR-IAGE-SEATS.

The Schedule referred to in these let-ters Patent and making parl: o the same.

To all whom it may concern sleighS, or other vehicles, in which the seat is capable of being shiftedor removed entirely from the carriage iat pleasure, and is supported atthe ends' by the oppositesides of the carriage-bed in a rebate orrecess along the e'dgesffor that purpose.

In the drawing- Figure 1 represents a front view of my clamp as applied to a carriage, and

Figure' 2,`a-sectio'n through the line :c :c of fig. 1. A represents theend of the carriage-seat, and

B the side of carriage. C represents the rebate along the edge of the carriage-bed, and

I), a corresponding rehate=on the edge of the seat. E is a short metal plate secured to the carriage-seat by means of s crews o1' otherwise, provided with a hook or pawl, F, hinged to its lowerend.

i- From the lower part of the said hook extends a projection, G, through which passes the end of a short tongue or rod, G', which is also hinged to the plate E, and carries a spiral spring, H, having a bearing against said rod or tongue at one end, and against the projection G at the other.

Iis a metal plat-e attached to the outside of the l seat-,the lower end 'of which falls as low as the lower edge ofthe rebate D on the carriage-seat.

,i J is plate of metal attached tothe inside of the carriage-bed, with projections orears jj, which embrace the sides of the pawl onhook Fwhen the seat is secured to the carriage. The Vlower 'edge of said plate isrcut away in the are of a circle, as shown in iig. 1, to assist in'keeping the hook in position when the seat. is in place.

Io secure the seat to the carriage-bed, the pawl or hook is drawn back by means of the thumb-piece at itslower end, and the seat so placed that the pawl will come' immediately over the space bet-Ween the.

ears j j, and, when the seat is down to its place, upon releasing the pawl the spring forces it to its original position, the hook engaging, under thelower edge ofV Y the plate J. O1', by simply placing the seat lin its position, the weight of it, or a slight pressure down-v ward, will cause the pawl or hook to be automatically pressed baci; by reason of the wedge-shape of its-lower end, until the hook passes the plate J, when the spring will throw it under the edge of said plate, thus securing the seat -in its proper position.

Instead of the spiral spring G, astraight or slightly curved spring may he-used, havingv its upper end attached to the plate E and its lower end pressing against the hooli F but I prefer a spiral spring, as-

shown anddescribed.

What I claim, and desire tolse-cure by Letters Iat.- A

ent, is

In combination with. a movable carriage-seat, as described, the hinged pawl or hook F, spring H, andplates I and J constructedand arranged to operate substantially as described.

Y HENRY J. NORTHRUP. Witnesses EUGENE HYATT, S. It. Norms. 

